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kenny6666 [7]
3 years ago
9

Determine the average velocity and average speed for the following situation. A dog runs west for 35 meters then turns east for

45 meters stops then continues east for 65 meters. The time for the total trip is 85 seconds.
Physics
1 answer:
mart [117]3 years ago
7 0

Answer:

0.882 m/s average velocity and 1.71 m/s average speed

Explanation:

The dog travels a total of 35 m west and 110 m east.

110-35 = 75 m east of the starting position. Since velocity is a vector you must consider its first and final position and not the total distance traveled.

75 m / 85 s = 0.882 m/s average velocity

Speed is not concerned with direction so we instead add the total distance traveled which is 35+110 = 145 m. We then perform the same operation as before and divide by the time it took to run this distance.

145 m / 85 s = 1.71 m/s average speed

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Using the formula :

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Density of hydrogen atom:

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Using the formula :

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